Granted Patent
Utility
US 4,724,365 · App. 06/850,564
Control circuit for direct current brushless motors
Inventor:
Rolf Muller
Patented Case
View Patent ↗
Granted: Feb 9, 1988
Filed: Apr 11, 1986
Inventor
Rolf Muller
Assignee (at issue)
Papst Motoren GmbH & Co KG
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.